The document discusses the differences between the RGB and CMYK color schemes. RGB uses red, green, and blue as primary colors and is an additive color model used for digital screens. CMYK uses cyan, magenta, yellow, and black inks as primary colors and is a subtractive color model used for printed materials. The key differences are that RGB is for digital works and has a wider color range while CMYK is for print and has less vibrant colors due to subtractive color mixing.